SubZero Tube-H5 Head

This amp head is 5 watts and gets REALLY loud (suitable for rehearsal with an average drummer). It has volume, EQ (treble and bass), gain (for the distortion channel), channel select, standby and power. It runs on two valves: 12AX7 on the preamp and EL84 on the power section. It has vintage looks, although there are minor finishing blemishes (corner buffers are not set exactly the same, but I guess that comes with the price).
I use the amp mostly at home with a 1x12, and in some jam sessions with a 2x12. It has a pretty decent sound at low volume, but there is a lot of top end which needs to be tamed with the treble knob. The real fun comes when cranked: the clean channel starts to growl in a sweet way, perfect blues or classic rock tones. The distortion channel starts at clean and adds a hairy overdrive with the gain knob which is really usable. Maxed out, you can play Guns ´n Roses (specially with humbuckers) and get impressive hard rock tones (I have actually tried this seldom, as I am more on a classic vibe).
Before this amp I had a Vox Lil´ Nightrain. This was a great amp, again, very trebly. The major differences were volume (no jamming with a drummer with the Vox) and the headroom. When one wanted to get high volume, the overdrive became too strong and didn´t allow the more classic sound to come out. This is, by far, the best characteristic of the Sub Zero, because the clean channel stays cleans breaking very mildly, which is just what I wanted on my valve amp.
With regard to durability, I must say I have only had it for some 3 months, but it seems to be holding on just fine (I do take care of my equipment, though). I have no reason to think that it will fail anytime soon, but I wouldn´t kick it or drop it (nor would I do such thing with a Blues Jr...). Increadible value for the money
Pros: Very good tone, loud enough for jams, incredible value for the money (no useless options).
Cons: No footswitch option, very slight finishing signs (cosmetic only), trebly at low volumes.

*****
The brand is not NewTek is: SubZero.
The Applications is: Tube-H5
As it is impossible to create a new brand .. I put here and asked the site to create the brand to store this contrib. thank you
*****
Supposedly lamp .. EL84 + ECC83
Power 5W, 3 speaker outputs
Severe Acute, clean channel volume, gain + volume for lead channel.
No I / O effects
No reverb
Well, we will not be challenging for a head sold 120 euros.

UTILIZATION

Very simple config.
Cute little head.
OK for all.
Clean sounds OK, typical lamp, but not very slap, not very versatile, not talkers.
Distortion fuzz .. rather kind transistors.
And for good reason. (See below)

SOUNDS

I tried with Standart Gibson SG.
Well, it's not for the fusion of metal or rather .. Rock.

OVERALL OPINION

I got this almost new and HS head to fix it (I love it).
By opening this one, it finds
1) the preamp is made by integrated CI.
2) the distortion is generated by OP
3) of a moist ECC83 is not used!
4) the output transformer was out of order, because the primary was shorted to the secondary!
In other words, it was VERY wound merdiquement .. anyhow.
The transformer power supply is poorly calibrated.
With the tilt, the signal is very crappy, which explains the absence of fishing, versatility.
In short, it is pure crap, as I do not think it can exist.
Although the sound is nice (although disappointing for a tube amp), the reliability is not there.
I would not recommend buying .. in 3 years, all these heads will be thrown.
A take to tinker ..